Corkscrew



FIG. 1 is a top perspective view of a corkscrew of the present invention;

FIG. 2 is a left side view thereof, the opposite side being a mirror image;

FIG. 3 is a rear view thereof;

FIG. 4 is a front view thereof;

FIG. 5 is a top view thereof; and,

FIG. 6 is a bottom view thereof.

The broken lines in the drawings are for illustrative purposes only and form no part of the claimed design. 

We claim the ornamental design for a corkscrew, as shown and described. 